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Hi there, the acts_as_tree API says that I can set a counter cache and
that it will automatically increment the "children_count" column. I
did that but when I create a new page it asks for a "pages_count"
column instead.
Here is the relevant part of page.rb model:
class Page < ActiveRecord::Base
acts_as_tree :order => :position, :counter_cache => true
acts_as_list :scope => :parent_id
end
And here is what happens when I create a new page:
Mysql::Error: #42S22Unknown column 'pages_count' in 'field list':
UPDATE pages SET pages_count = pages_count + 1 WHERE (id = 2)
Any ideas why it's not asking for "children_count"?
Jeff

ok, to answer my own question.
from http://dev.rubyonrails.org/ticket/1576
>>
04/07/06 10:56:38: Modified by Frodo Larik
I was also a little confused by this, by thinking it was the name of the
table, but it isn't.
according to reflection.rb the name is made up like this:
def counter_cache_column
if options[:counter_cache] == true
"#{active_record.name.underscore.pluralize}_count"
elsif options[:counter_cache]
options[:counter_cache]
end
end
that means if you set :counter_cache => true it uses a pluralized
version of the class name.
If you set :counter_cache => "whatever_counts" it uses the
"whatever_counts" column for counting.
Hope it helps.
>>